Return-Path: Received: from rly-db02.mx.aol.com (rly-db02.mail.aol.com [172.19.130.77]) by air-db02.mail.aol.com (v121.5) with ESMTP id MAILINDB024-aac4883798d64; Sun, 20 Jul 2008 13:44:50 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-db02.mx.aol.com (v121.5) with ESMTP id MAILRELAYINDB022-aac4883798d64; Sun, 20 Jul 2008 13:44:47 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1KKcxB-0002MJ-2W for rs_out_1@blacksheep.org; Sun, 20 Jul 2008 18:44:13 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1KKcxA-0002MA-Ih for rsgb_lf_group@blacksheep.org; Sun, 20 Jul 2008 18:44:12 +0100 Received: from yw-out-1718.google.com ([74.125.46.153]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1KKcx7-0004rN-Pp for rsgb_lf_group@blacksheep.org; Sun, 20 Jul 2008 18:44:12 +0100 Received: by yw-out-1718.google.com with SMTP id 9so342509ywk.64 for ; Sun, 20 Jul 2008 10:44:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:in-reply-to:mime-version:content-type :content-transfer-encoding:content-disposition:references; bh=S12E54dVSBBK1309Cbkhw9LhJqlQ9Mp6MZvg3pGPYMQ=; b=iohRSJsINxRZV99vrIGbVSr9PoAAum8ClDyyAQMs8Y4E59c8e7XWwdCnLHDldLfme0 bg7CEJBb9f4i65txSBPCWrV7R3BgyW8W59SeyvOJN+oCKHxRvePaIb2PEQRXtDHrcZM7 KUCkajo1MlPvEkOaM39oTmjHPp16aJpAk/I50= DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:to:subject:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=WItnNtXDm1PquCROE/Ns5lBz0scV3cDU2EoFcvEvUgAbt8UjZ3c7Ll5ZTU2jIMCAPI YvEH6WlIhcm+exAnl1EnSuPgcRApWdU5RjNg+LWwDYOUAdFAmxKUY/g4r26b+3HBUMU0 P+tH2UjF1XaZJmywMWvGHK6HDUUgoSR2LM29Q= Received: by 10.151.102.16 with SMTP id e16mr2733327ybm.188.1216575842320; Sun, 20 Jul 2008 10:44:02 -0700 (PDT) Received: by 10.151.50.21 with HTTP; Sun, 20 Jul 2008 10:44:02 -0700 (PDT) Message-ID: Date: Sun, 20 Jul 2008 18:44:02 +0100 From: "Andy Talbot" To: rsgb_lf_group@blacksheep.org In-Reply-To: <001901c8ea7c$5c51fb20$0401a8c0@lindavideo> MIME-Version: 1.0 Content-Disposition: inline References: <006e01c8e788$ca7394c0$0900a8c0@AM> <20080717110533.ji3so2ex15i0w8ok@webmail4.kuleuven.be> <487F2369.3701.24D39C@mike.dennison.ntlworld.com> <001901c8ea7c$5c51fb20$0401a8c0@lindavideo> X-Karma: 0: DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Re: LF RadCom Articles Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : ? X-Mailer: Unknown (No Version) Send it in - sounds just like the sort of simple 'weekend' article several technical editors have been asking for. btw. By LCL output stage, assume you mean a lowpass Tee network? Andy G4JNT www.scrbg.org/g4jnt design > and build our own equipment, but do not submit it for possible publication > because, state of the art technology it is not, the design is not > particularly elegant, and the Technical Editor and the more accomplished > contributors would fall over laughing when they saw it. But most of these > projects are practical and they work. I work on the KISS (Keep It Simple > Stupid) principle, don't use three components when one will work just as > well. My 500kHz TX does not have any fancy CW sidetone circuit on transmit, > just a piezo buzzer wired across the keyed 12v line to the driver board, the > most complicated bit is the LCL output stage, which delivers 23W into a > 50ohm dummy load and 900mA up the antenna, the TX/RX switching is like the > old days, a simple toggle switch. --